“The laws of history are as absolute as the laws of physics, and if the probabilities of error are greater, it is only because history does not deal with as many humans as physics does atoms, so that individual variations count for more.”
― Isaac Asimov, Foundation and Empire

“Pyscho-history dealt not with man, but with man-masses. It was the science of mobs; mobs in their billions. It could forecast reactions to stimuli with something of the accuracy that a lesser science could bring to the forecast of a rebound of a billiard ball. The reaction of one man could be forecast by no known mathematics; the reaction of a billion is something else again.”
― Isaac Asimov, Foundation and Empire

“Every vice of the Empire has been repeated in the Foundation. Inertia! Our ruling class knows one law; no
change. Despotism! They know one rule; force. Maldistribution! They know one desire; to hold what is
theirs.”
― Isaac Asimov, Foundation and Empire